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https://www.readbyqxmd.com/read/28923548/survival-of-extensively-damaged-endodontically-treated-incisors-restored-with-different-types-of-posts-and-core-foundation-restoration-material
#1
Priscilla Cardoso Lazari, Marco Aurélio de Carvalho, Altair A Del Bel Cury, Pascal Magne
STATEMENT OF PROBLEM: Which post-and-core combination will best improve the performance of extensively damaged endodontically treated incisors without a ferrule is still unclear. PURPOSE: The purpose of this in vitro study was to investigate the restoration of extensively damaged endodontically treated incisors without a ferrule using glass-ceramic crowns bonded to various composite resin foundation restorations and 2 types of posts. MATERIAL AND METHODS: Sixty decoronated endodontically treated bovine incisors without a ferrule were divided into 4 groups and restored with various post-and-core foundation restorations...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28902239/efficiency-of-polymerization-of-bulk-fill-composite-resins-a-systematic-review
#2
André Figueiredo Reis, Mariana Vestphal, Roberto Cesar do Amaral, José Augusto Rodrigues, Jean-François Roulet, Marina Guimarães Roscoe
This systematic review assessed the literature to evaluate the efficiency of polymerization of bulk-fill composite resins at 4 mm restoration depth. PubMed, Cochrane, Scopus and Web of Science databases were searched with no restrictions on year, publication status, or article's language. Selection criteria included studies that evaluated bulk-fill composite resin when inserted in a minimum thickness of 4 mm, followed by curing according to the manufacturers' instructions; presented sound statistical data; and comparison with a control group and/or a reference measurement of quality of polymerization...
August 28, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28902235/trends-in-restorative-composites-research-what-is-in-the-future
#3
Mariel Soeiro Maas, Yvette Alania, Livia Camargo Natale, Marcela Charantola Rodrigues, David Christopher Watts, Roberto Ruggiero Braga
Clinical trials have identified secondary caries and bulk fracture as the main causes for composite restoration failure. As a measure to avoid frequent reinterventions for restoration replacement, composites with some sort of defense mechanism against biofilm formation and demineralization, as well as materials with lower susceptibility to crack propagation are necessary. Also, the restorative procedure with composites are very time-consuming and technically demanding, particularly concerning the application of the adhesive system...
August 28, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28886766/polymer-based-direct-filling-materials
#4
REVIEW
Carmem S Pfeifer
After a brief review of current restorative materials and classifications, this article discusses the latest developments in polymer-based direct filling materials, with emphasis on products and studies available in the last 10 years. This will include the more recent bulk fill composites and self-adhesive materials, for which clinical evidence of success, albeit somewhat limited, is already available. The article also introduces the latest cutting edge research topics on new materials for composite restorations, and an outlook for the future of how those may help to improve the service life of dental composite restorations...
October 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/28883301/changes-in-polymerization-stress-and-elastic-modulus-of-bulk-fill-resin-composites-for-24-hours-after-irradiation
#5
Takatsugu Yamamoto, Masao Hanabusa, Saori Kimura, Yasuko Momoi, Tohru Hayakawa
The objective of this study was to investigate changes in polymerization stress and elastic modulus for light-cured bulk-fill resin composites following irradiation. Crack analysis was applied to obtain the stresses for 24 h after irradiation, which were calculated from the lengths of cracks in a glass mold bonded to the composites. The elastic modulus was repeatedly measured by nano-indentation tests performed over 24 h. The lengths of the cracks, the interfacial stress, and the elastic modulus were significantly affected by the material and time after irradiation (p<0...
September 7, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28869367/survival-of-direct-posterior-composites-with-and-without-a-bulk-fill-base
#6
C McGuirk, F Hussain, B J Millar
OBJECTIVES: Direct composite restorations are increasingly popular and a flowable bulk-fill base material (SDR, Dentsply) claims to minimise stress through a more flexible polymerisation process. This retrospective audit of restorations placed in general practice compares SDR based restorations with conventional composite restorations. METHODS: Restorations were all placed by one operator using a similar clinical technique and were audited as Group G, placed with a conventional layering composite (G-aenial, GC) and Group S which had a bulk-fill base of SDR (Dentsply) and then were covered with G-aenial (GC)...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28840890/the-next-generation-in-bulk-fill-technology
#7
(no author information available yet)
No abstract text is available yet for this article.
August 25, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28832713/comparing-depth-dependent-curing-radiant-exposure-and-time-of-curing-of-regular-and-flow-bulk-fill-composites
#8
Jose Augusto Rodrigues, Ilana Pais Tenorio, Ginger Baranhuk Rabello de Mello, André Figueiredo Reis, Chiayi Shen, Jean-François Roulet
The effect of restoration depth on the curing time of a conventional and two bulk-fill composite resins by measuring microhardness and the respective radiosity of the bottom surface of the specimen was investigated. 1-, 3- and 5-mm thick washers were filled with Surefil SDR Flow-U (SDR), Tetric EvoCeram Bulk Fill-IVA (TEC) or Esthet-X HD-B1 (EHD), and cured with Bluephase® G2 for 40s. Additional 1-mm washers were filled with SDR, TEC or EHD, placed above the light sensor of MARC®, stacked with pre-cured 1-, 3- or 5-mm washer of respective material, and cured for 2...
August 21, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28829935/extensive-assessment-of-the-physical-mechanical-and-adhesion-behavior-of-a-low-viscosity-bulk-fill-composite-and-a-traditional-resin-composite-in-tooth-cavities
#9
R X Sousa-Lima, Lja Silva, Lvf Chaves, S Geraldeli, Rcb Alonso, Bcd Borges
OBJECTIVES: To compare the degree of conversion (DC), depth of polymerization (DP), shrinkage stress (SS), flexural strength (FS), elastic modulus (EM), and bond strength (BS) of a low-viscosity bulk fill resin composite and a paste-like traditional composite. METHODS: Tetric Evo-Flow Bulk Fill (TBF) and Empress Direct (ED; Ivoclar Vivadent) composites were used. DC (%) and FS/EM (MPa/GPa) were evaluated in bar specimens (7×2×1 mm; n=10) using Fourier-transform infrared spectroscopy and a three-point bending test in a universal testing machine (UTM), respectively...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28791976/a-prospective-randomized-double-blind-clinical-trial-of-one-nano-hybrid-and-one-high-viscosity-bulk-fill-composite-restorative-systems-in-class-ii-cavities-12-months-results
#10
H Colak, U Tokay, R Uzgur, M M Hamidi, E Ercan
BACKGROUND: Recently, manufacturers have introduced bulk-fill composite resins that reportedly can be placed in increments of 4 mm or greater. OBJECTIVE: The purpose of this article was to report the results of 12 months prospective randomized clinical trial that evaluated the clinical performance of one high-viscosity bulk-fill composite resin in Class II cavities of posterior teeth. MATERIALS AND METHODS: Thirty-four participantshad at least two Class II cavities included the study...
July 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28791970/leakage-testing-for-different-adhesive-systems-and-composites-to-permanent-teeth
#11
B S Bolgul, B Ayna, I Simsek, S Celenk, O Seker, G Kilinc
AIM: To explore the microleakage of different adhesive systems and flowable composites to permanent teeth. SUBJECTS AND METHODS: In this study, a total of 84 human premolar teeth were used. Class V cavities were prepared on the buccal surfaces. The teeth were randomly assigned to six groups of 14 teeth each as follows: The first group - etch-rinse adhesive applied and cavities filled with flowable composite, the second group - etch-rinse adhesive applied and cavities filled with bulk-fill resin composite, the third group - one-stage self-etch (SE) adhesive applied and cavities filled with flowable composite, the fourth group - one-stage SE adhesive applied and cavities filled with bulk-fill resin composite, the fifth group - two-stage SE adhesive applied and cavities filled with flowable composite, and the sixth group - two-stage SE adhesive applied and cavities filled with bulk-fill resin composite...
July 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28764288/evaluating-the-marginal-integrity-of-bulk-fill-fibre-reinforced-composites-in-bio-mimetically-restored-tooth
#12
Arun Kumar Patnana, V Narsimha Rao Vanga, Srinivas Kumar Chandrabhatla
INTRODUCTION: Over the past years, composites in aesthetic dentistry are showing a considerable progress, but mechanical strength and polymerization shrinkage are the two main drawbacks, which limit their use in high stress bearing areas. AIM: To evaluate the marginal integrity of short glass fibre reinforced composite restorations, fibre reinforced composites with composite superficial layer, and fibre reinforced composites with underlying flowable composite layer...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28762350/comparative-evaluation-of-microleakage-between-bulk-esthetic-materials-versus-resin-modified-glass-ionomer-to-restore-class-ii-cavities-in-primary-molars
#13
Vellore Kannan Gopinath
AIM: The aim of the study was to assess the microleakage of one high-viscosity conventional glass ionomer cement (GIC) and a bulk-fill composite resin, in comparison to a resin-modified GIC in Class II restorations in primary molars. MATERIALS AND METHOD: Standardized Class II slot cavity preparations were prepared in exfoliating primary molars. Teeth were restored using one of the three materials tested (n = 10): SonicFill bulk-fill composite resin (SF), EQUIA Fil conventional reinforced GIC (EQF), and Vitremer resin-reinforced GIC (VT)...
July 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28760330/thermographic-analysis-of-the-effect-of-composite-type-layering-method-and-curing-light-on-the-temperature-rise-of-photo-cured-composites-in-tooth-cavities
#14
Min-Jung Kim, Ryan Jin-Young Kim, Jack Ferracane, In-Bog Lee
OBJECTIVES: The purpose of this study was to investigate temperature rise in the composite and dentin of a class I cavity in extracted human molars under different restoration conditions, including the use of different composite types, layering methods, and curing lights. METHODS: Open occlusal cavities were prepared on 28 extracted human molars. A conventional (Filtek Z250) and a bulk-fill (Filtek Bulk Fill Posterior; BFP) composite were used to restore the preparations...
July 28, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28750776/in-vitro-biofilm-formation-on-resin-based-composites-after-different-finishing-and-polishing-procedures
#15
Gloria Cazzaniga, Marco Ottobelli, Andrei C Ionescu, Gaetano Paolone, Enrico Gherlone, Jack L Ferracane, Eugenio Brambilla
OBJECTIVES: To evaluate the influence of surface treatments of different resin-based composites (RBCs) on S. mutans biofilm formation. METHODS: 4 RBCs (microhybrid, nanohybrid, nanofilled, bulk-filled) and 6 finishing-polishing (F/P) procedures (open-air light-curing, light-curing against Mylar strip, aluminum oxide discs, one-step rubber point, diamond bur, multi-blade carbide bur) were evaluated. Surface roughness (SR) (n=5/group), gloss (n=5/group), scanning electron microscopy morphological analysis (SEM), energy-dispersive X-ray spectrometry (EDS) (n=3/group), and S...
July 24, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28748051/factors-affecting-marginal-integrity-of-class-ii-bulk-fill-composite-resin-restorations
#16
Siavash Savadi Oskoee, Mahmoud Bahari, Elmira Jafari Navimipour, Amir Ahmad Ajami, Negar Ghiasvand, Ayda Savadi Oskoee
Background. Bulk-fill composite resins are a new type of resin-based composite resins, claimed to have the capacity to be placed in thick layers, up to 4 mm. This study was carried out to evaluate factors affecting gap formation in Cl II cavities restored using the bulk-fill technique. Methods. A total of 60 third molars were used in this study. Two Cl II cavities were prepared in each tooth, one on the mesial aspect 1 mm coronal to the CEJ and one on the distal aspect 1 mm apical to the CEJ. The teeth were divided into 4 groups: A: The cavities were restored using the bulk-fill technique with Filtek P90 composite resin and its adhesive system and light-cured with quartz tungsten halogen (QTH) light-curing unit...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28721100/shear-bond-strength-of-different-surface-treatments-in-bulk-fill-microhybrid-and-nanoparticle-repair-resins
#17
Rudys Rodolfo de Jesus Tavarez, Lauber Jose Dos Santos Almeida Júnior, Tayanne Christine Gomes Guará, Izabella Santos Ribeiro, Etevaldo Matos Maia Filho, Leily Macedo Firoozmand
OBJECTIVES: The purpose of this study was to evaluate the influence of surface treatment and different types of composite resin on the microshear bond strength of repairs. MATERIALS AND METHODS: Seventy-two specimens (n=72) were prepared using a nanoparticle resin and stored in artificial saliva at 37 ± 1°C for 24 h. After this period, the specimens (n=24) were restored with microhybrid resin P60 (3M ESPE), nanoparticle resin Filtek Z350 (3M ESPE), and Bulk Fill Surefil SDR Flow (Dentsply) composite resins...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/28688735/implications-of-resin-based-composite-rbc-restoration-on-cuspal-deflection-and-microleakage-score-in-molar-teeth-placement-protocol-and-restorative-material
#18
Lauren E J McHugh, Ioanna Politi, Rami S Al-Fodeh, Garry J P Fleming
OBJECTIVE: To assess the cuspal deflection of standardised large mesio-occluso-distal (MOD) cavities in third molar teeth restored using conventional resin-based composite (RBC) or their bulk fill restorative counterparts compared with the unbound condition using a twin channel deflection measuring gauge. Following thermocycling, the cervical microleakage of the restored teeth was assessed to determine marginal integrity. METHODS: Standardised MOD cavities were prepared in forty-eight sound third molar teeth and randomly allocated to six groups...
July 5, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28684960/effect-of-mouthwashes-on-solubility-and-sorption-of-restorative-composites
#19
José Pereira Leal, Jaqueline Damasceno da Silva, Rafaelle Fernanda Melão Leal, Carlos da Cunha Oliveira-Júnior, Vera Lúcia Gomes Prado, Glauber Campos Vale
OBJECTIVE: Composites sorption and solubility can be precursors of several chemical and physical processes, which lead to deleterious effects on the polymer structure. This study evaluated the effect of mouthwashes on solubility and sorption of composite resins. MATERIALS AND METHODS: Forty-two specimens of each evaluated composite (Filtek Bulk Fill Flow, Opallis Flow, Durafill VS, and Filtek Z350) were prepared and randomized into seven groups for each solution (mouth rinses with and without alcohol and distilled water) and stored for seven days...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28652817/effect-of-preheating-and-light-curing-unit-on-physicochemical-properties-of-a-bulk-fill-composite
#20
Jéssica Dias Theobaldo, Flávio Henrique Baggio Aguiar, Núbia Inocencya Pavesi Pini, Débora Alves Nunes Leite Lima, Priscila Christiane Suzy Liporoni, Anderson Catelan
OBJECTIVE: The aim of this study is to evaluate the effect of composite preheating and polymerization mode on degree of conversion (DC), microhardness (KHN), plasticization (P), and depth of polymerization (DP) of a bulk fill composite. METHODS: Forty disc-shaped samples (n = 5) of a bulk fill composite were prepared (5 × 4 mm thick) and randomly divided into 4 groups according to light-curing unit (quartz-tungsten-halogen [QTH] or light-emitting diode [LED]) and preheating temperature (23 or 54 °C)...
2017: Clinical, Cosmetic and Investigational Dentistry
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